Form for cement cisterns or the like.



PATENTED DEG. 3, 1907.

i0 Il FORM POR CEMENT PATENTED DBC. 3, 1907.

H. E. VOEAW.

EoEM EOE CEMENT GISTEENS 0E TEE LIKE.

-SHEBT 2.

2 SHEETS APPLIOATION FILED SBPT.ZI6,19O8.

1 Vsame with absolute exactitude.

To dll whom it may concern:

UNTED sTATns HOWARD E. VOTAW, OF COLLEGE CORNER, INDIANA.

FORM FOR CEMENT CISTERNS 0R THE LIK'E.

- Be it known that I, HOWARD E. VorAW, a citizen of the United States, residing at. College Corner, in the county of Jay and `State of ,.Indiana, have invented a new and4 useful Construction for Forms for Cement Cisterns or the Like; and I hereby declare the'ollowing to be a full and explicit exposition and specification thereof, being such ,as Will enable others to make and-use the .M invention consists of a formerA for molug' e interlockin i' 20 handle,

4same being composed of a `.it

cement cisterns or the like, the

lurality of de- -tachable sections assembled` vertically in circular form, a plurality of crown forming sections, and also the neck forming sections, with detachable means for each, and with and self sustaining means for the severa parts,'all substantially as 'will herein er be particularly specified and set forth. l

The object of my invention, broadly speaking, 1s to provide af cistern former which may be composed of a minimum number of mechanical parts; which will be easy to to facilitate the assembling and disassembling of the parts; to provide a construction which can be manufactured and sold at a comparatively low price; and b 4which a cement cistern may be formed whic will be .practically perfect in 'its several 'l proportions. l

`cement clstern forming when assembled, all the A more particular object is to provide a device 1n which, parts thereof `will contribute to providing a self-supportin and interlocking unit whose resistance Wi be above its requirements, and which may 4o` be easily disassembled and removed from v#the cistern after the cement material has solidified.

' l Figure 1 is a vertical central sectional view of thy invention.; Fig. 2 is a cross sectional vievrvof. lthe invention, as'taken on the line.

X of Fig. 1; Fig. 3 is a detail plan view of one .of` the knuckle jointsespeclally conthe starting or dis- Speciflcation of Letters Patent.

Application filed September 26| 1906. Serial No. 886.240.

view of the outer neck lan view of the underside of the crown;-

- be described as to'their diiferentiations. 'posed across the concave face of each of said l loosely insertible, designated by the letter stmlcte'd to facilitate assembling of the sections; 4 1s a per-I E 1 spective, view o fzthe meeting edges ef a por- Patented Dec. 3, 1907.

'moval when starting to disassemble i the sections Fig. 5tI is a top plan View of thel crown; Ifig. 6 is a'. perspective view ofthe lnner neck member; Flg. 7 1s a perspectlve member; Fig. 8 is a igs. 9 and 10 are detail views of two of the retaining keys; and Fig. 11 is a perspective detail view of one of the knuckle joints which I employ.

Similar indices denote and refer to like parts throughout the' several views of the swings. In order that the construction and operation of m invention may .be more fully understoo and appreciated I will now take up the detail description thereof in which I will set forth the invention a briefly and as compactly as I may.

In its construction the device is composed of a plurality of vertical sections, indicated by the numerals 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, each consisting of a single length of sheet metal bent longitudinally to conform to the curvature of the cistern to be formed their lengths being equal to the depth of the cistern to be formed. Each of said'sections is identical with every other in construction, except sections 1 and 2 which will presenDtly sections are a plurality (preferably four) ribs the same being desi nated by the letter c in each instance. Sai ribs are adapted to abut .together when the device is set u in Fi s. 1 and 2. Each two abuttlng ends of the r1 s are adapted to be coupled together by.

a knuckle-j oint or hinge, as shown in Fig. 11, the male member of each hinge being in each instance denoted by the letter B, and the female member' being denoted by therletter C. Said members B and C are secured to the faces of the innerenls of the ribs and being .ppositely disposed substantially as shown.

ch pair of the members B and C are adaptled to be 'coupled together by a pin, to be and lch of said pins is In the formation of cement cisterns I first form a hole in the earth of suiiicient depth for a cistern, and of a circular diameter greater than is the diameter of the. assem- Dled device. I then set u the 4sections'` within'said hole, as indicate in Figc-Land as shown Aremoving the pins `the section 2` may be drawn inward and re-I 2, lockin the sections together, as in Fig. 1 1, thereby orminga round device of somewhat less dimensions vthan is the said hole in which they are located. Aiterthe above the space between the device and the" earth may be filled in with plastic cement and this is then Aallowed to sohdify.

In order to rovide for the removal of the device after t e cement has hardened it is necessary to construct the adjacent portions of two of the sections slightly different from the others just described: VThis latter constructio'n is shownmost clearly in Figs. 3 and 4, in which the left-hand ends of the ribs a of the section 2 are cut on anangle both vvertically and horizontally. The horizontal angles of each extend from the edge of the sec tion 2 inward and to the right of the shoulders of the members B, and the vertical angles of the upperribs a,.of the section 2, ex

tend from its upper edge'downward and to A the right, while all the others therebelow are cut from their upper edges downward and to the left, for the reason which will presently beA made apparent. In reference to number 1 the ribs a thereof do not extend out to the edge of that number, as indicated in Fig. 4, thereby forming a space between each`of the oppositely disposed ends of theribs, which spaces are to e -filledin bykeys or wedges after the sections 1 and-2 are brought together and locked by one of said pins D as shown. The u per key E is inserted from below and is to Be driven upward, while each of the other keys, F, is inserted from above and is to be driven down. By reason of the above it will be ap arent that after the cement has solidified) around the device the keys E and F may be removed, and that by D the left-hand edge of moved, after which each of the other sections may be easily removed and taken from the cisternto again be set up in the manner shown and described. The heads or lugs extending out from the larger end of the keys are to provide means for facilitating the removal of the keys b a pry or the like. 'Be-r fore the removal o said sections however, means are provided for forming the top and neck of the cistern, which will now `be deplurality of se scribed: The crown on which the top of the cistern is to be formed is composed first of a 12, 13, 14 an 15, their curved basesbeing adapted to rest on the upper row of ribs a., from where they extend inwardly and up- Wardly at a'predetermined angle, leaving 'a circular aperturebetween their inner ends as shown. Near their upper inner ends each of said'sectionsl is secured to aseparate rib b, which ribs -project out on each side of their respective sections sufliciently for the ends of the ribs to abut each other when the sections are located at the desired position and arated triangular sect-ions 11,

inclination, as shown in Fig. 1. The adjoining ends of each two of said-ribs b are connected by a knuckle joint, as shownrin Fig. 11, except that these are' formed curved, and 'at one point where the arrangement is the same as shown in Fig. 4, at which a key, similar to the key F, is employed to allow the sections to be removed. The space between cach two of the sections 11, 12, 13, 14

and 15 may be covered by the overlapping auxiliary sections 16, 17', 18, 19 and 20. When assembled as above set forth and as shown in Figs. 5 and 6 it is apparent that by reason of the knuckle joints formed by -the members B and C ofthe ribs t the crown will be self supporting and will vbe able in ad- `dition'thereto to support a layerof plastic. cement thereon which may be deposited over the top of the crown to form the cistern to After the cement forming the top has soiidified then the key F'may be removed,

thereby making it possible to disconnect the 1 top in the manner described with reference to theside sections,'but before this is done the neck of the cistern should be formed.

Before the cement formino the top has been deposited on the crown t e inner neckvband 21 should be positioned around the central aperture of the crown, allowing it to rest thereon as shown in Fig. 1'. This band 2 1 is simply a single length ofV sheet metal having secured on the inside face thereof and extending a short distance from its meeting edges the short ribs d, shown in Fi s. 1 and. 6, secured on the ends of which are t e two sets of members B-C and B-fC, and each pair of j ribs d are spaced apart by a key F as shown in Fig. 6, and the construction and operation of these joints of the band 21 are the same as vthat as shown in Fig. 4? After the cement forming the top. has been deposited on the crown, and extends up against the 'band .21,

then the outer neck-band '22is rested on the top as shown; This band 22 is of greater diameter than the band 21, around which it isY disposed, and it is of less height 'the dierence in height being'the same as the thickness of the cement top. This outer band is also formed of a single length of sheet metal,

having secured on thev outside facethereof .v

and extending a short distancel from its meetmg edges the ribs f, as shown 1n Fig. 7.

ilov

Securedon the ends of the ribs f are the two i Particularly when the sheetmetal of the sections is comparatively thin I have found it advisable to employ reinforcing strips as the strips 1, 2a, 3, 4a, 5, 6, 7u, 8a, 9, and which are secured along the leftehand vertical edge of the respective sections, 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, as indicated., which When the sections are assembled will lap over the edge of the adjoining sections g and if de 10 sired the adjoining .edges of the crown sections and the adjoining edges of the bands 2l and 22 may be reinforced in like manner, all substantially as shown in the drawings.

Having now fully shown and described my invention in its preferred embodiment, what I claim and desire to secure by Letters Patent of the United States, is

A fo'rrn for making cement cisterns or the like, comprising a lurality of sections each formed substantially on the 'segment of a circle, said sections having ribs secured transversely to their inner faces and provided With means for exibly connecting their adjacent ends, the adjacent ends of the ribs of a pair of said sections being spaced apart, knuckle joint membersseeured to the inner sides of these ribs and projecting beyond but Iin rear of their spaced ends, pins connecting said knuckle joint members, seats thus being formed between the spaced rib ends and between the knuckle joint inembers and the inner sides of the form sections, and longitudinally tapering wedges adapted to be driven into said seats to expand the form.

ln testimony whereof I have hereunto signed my name to this specification in the presence of two subscribing witnesses.

HOWARD E. VOTAW. Witnesses v P. M. HEARN, JOHN M. SHULTz. 

